Barack Obama has heeded calls to help secure the future of the historic Paris Agreement by transferring a second $500 million instalment to the Green Climate Fund, just three days before he leaves office. That leaves $2 billion unpaid as Donald Trump takes office.

More than 100 climate and development organisations, along with 70,000 people, have called on Barack Obama to help secure the future of the Paris Agreement by transferring the remaining $2.5bn committed by the US.